package cn.yfxu.server.config.filter;

import cn.yfxu.server.pojo.Menu;
import cn.yfxu.server.pojo.Role;
import cn.yfxu.server.service.IMenuService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.access.SecurityConfig;
import org.springframework.security.web.FilterInvocation;
import org.springframework.security.web.access.intercept.FilterInvocationSecurityMetadataSource;
import org.springframework.stereotype.Component;
import org.springframework.util.AntPathMatcher;

import java.util.Collection;
import java.util.List;

/**
* @author Xxxxyf
* @date 2021/3/8
* @desc 根据请求url分析请求所需的角色
*/
@Component
public class CustomerFilter implements FilterInvocationSecurityMetadataSource {

    @Autowired
    private IMenuService menuService;

    AntPathMatcher antPathMatcher=new AntPathMatcher();

    @Override
    public Collection<ConfigAttribute> getAttributes(Object object) throws IllegalArgumentException {
        //获取请求的URL
        String requestUrl = ((FilterInvocation) object).getRequestUrl();
        //System.out.println("requestUrl = " + requestUrl);
        List<Menu> menus = menuService.getMenusWithRole();
        for (Menu menu:menus) {
            //判断请求URL和菜单角色是否匹配
                if (antPathMatcher.match(menu.getUrl(),requestUrl)){
                    String[] str = menu.getRoles().stream().map(Role::getName).toArray(String[]::new);
                    //System.out.println("str = " + str);
                    return SecurityConfig.createList(str);
                }
        }
        //没匹配上的URL默认登录即可访问
        return SecurityConfig.createList("ROLE_LOGIN");
    }

    @Override
    public Collection<ConfigAttribute> getAllConfigAttributes() {
        return null;
    }

    @Override
    public boolean supports(Class<?> aClass) {
        return true;
    }
}
